The currency of the Dominican Republic is the peso - and in order to distinguish that from other pesos, the paper money notes specifically say "Peso Dominicano". Now the coins have been modified as well. Here is an image of the "old" peso coin, from the website of the central bank:(The figures from 1 to 8 explain the design elements, see here.)

The new coin, dated 2017 in the image below, has apparently just been released into circulation. It now says "Peso Dominicano":(Image from this article.) Currently 1 peso is ~0.017 euro.

Yes, I think so. The ISO code was and is "DOP", and the change they made here is basically a clarification ("this is not just some peso but the Dominican Republic's Peso"). For some strange reason the website of the central bank does not say anything about the new coin ...

As per the news article quoted by Chrisild, this change would be effected across all coins over the next few years, as and when that denomination is minted afresh.Since the circulation series has 4 denominations and they are likely to be allotted fresh KM#, can it not be considered a new series?